<!DOCTYPE html>
<title>View transitions: hit testing the pseudo-elements should always return the document element</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<style>
html { view-transition-name: none; }

body { margin: 0; }

#target {
  width: 100px;
  height: 100vh;
  view-transition-name: target;
}

::view-transition {
  background-color: green;
}

::view-transition,
::view-transition-group(target),
::view-transition-image-pair(target) {
  height: 100%;
  padding-left: 100px;
}

::view-transition-group(target) {
  animation-duration: 30s;
  background-color: lightgreen;
}

::view-transition-image-pair(target) {
  height: 100%;
  background-color: skyblue;
  animation: none;
  margin-left: 100px;
}

::view-transition-old(target) {
  height: 100%;
  width: 100px;
  animation: none;
  background-color: navy;
}
::view-transition-new(target) {
  height: 100%;
  width: 100px;
  margin-left: 100px;
  animation: none;
  background-color: purple;
}
</style>

<div id=target></div>

<script>
async_test(t => {
  assert_implements(document.startViewTransition, "Missing document.startViewTransition");
  document.startViewTransition(() => {
    requestAnimationFrame(async () => {
      // ::view-transition-group
      t.step(() => assert_equals(document.elementFromPoint(20, 20), document.documentElement));
      // ::view-transition-image-pair
      t.step(() => assert_equals(document.elementFromPoint(120, 20), document.documentElement));
      // ::view-transition-old
      t.step(() => assert_equals(document.elementFromPoint(220, 20), document.documentElement));
      // ::view-transition-new
      t.step(() => assert_equals(document.elementFromPoint(320, 20), document.documentElement));
      // ::view-transition
      t.step(() => assert_equals(document.elementFromPoint(420, 20), document.documentElement));
      t.done();
    });
  });
}, "Hit-testing view transition pseudo-elements should always return the document element");
</script>
